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Letters Pat-ent No. 74,173, dated February 4,1868.

IMPROVEMENT uitrrslm'us Een Erasme HEAVY WEIcETs. i

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To ALL WHOMIT MAY coNoERN; i y y Be it known thatl, S. E. TUTTLE, ofGenoa, in the countyoilDouglns',` undv Stcteof Nevada', have invented enew and improved Machine for, RnisingHeavy Weights; and I do herebydeclare t-ht'the following is c full, 'cleuigand exact descriptionthereof, n'hich willenahle' others skilled in the nrtto ineke und use4the sume, refer.

.ence being hed to the accompanying drawings, forming pert of thisspecification, in which* HFigure 1 is u longitudinal section of vui'yimproved machine' taken through tholinea: :c,"`g. 2.

Figure 2 is a. front viewof lthe same. Similar -letters of referenceindicate like parts. My'nvention has for its ohjectto furnish-'animproved machine hy meansof rihch heavy weights may he: raised with a,comparatively small outlay of power; and it consists in an improvedmchine formed by the combinationofthe shaft, the wheel having 'a' spiralgroove formed in itsfsce, the .toggle-blocks hving frction- -rollersattsehedfto them, and the slide,`or equivalent, to'whi'ch they arepivoted with euch other :mdwith thc guide-posts and frame'of themachine.

A is the frame of the machine, which must hcfmsde of s strengthproportionedto the weight of thel objects to berssed or to the powertobe exerted by said mztchine. B is n shaft, revolving in bearings, C,uttachedto the top of lthe frame A. To oneend of the shaft B is attacheda. pulley,` D, or geur-Wheel by-whichpower is applied to`the shaft B. Tothe other end of theshuft is attached the 'wheel E, havingejspiralgroove, e, out

'in it'sfce, and running from neer-the centre tothencireumference ofLsaid wheel., The dimensions the wheel lEwill depend upon the particularuse to which themaehine isl to-h-e nnplied,`butlfor ordinary purposesIusually make it about two feet five inches in. diameter. The groove4 el,which, on a wheel of this size, should'he about three inchesrwidmheginsaboutthreeinches'from the/centre nd terminates at lthe circumference ofseid wheel. The llange -ehetvreen. the coils of the groove e is aboutone inch wid e, so that one revolution of the wheel E willrnisetheiveight four inches. F is s. slide,"tha.t 'moves up' anddowfn in groovesformedin the inner sides of jtheguide-posts Gr, securely attached to thefreine A'. II arelcast-ilron blocks p ivotedn slotsiu` the slide F.`AThe ends of .the blocks H are hevellecl, as shown in 1, so as to .allowthe seid blocks to'sn'ing euward, so as to prevent them fromY passing intoo fur, and soith'nt in raising the weight their upper endsfmoy heeragainst fthesolidpart of the slide F, und rlieve the pivoting-pin 4fromthe strain. ...Ihre frictiomwheels, pivvcted to the rear side ofthe"blocks H by bolts passing through'said wheels and blocks, as shownin fig. 1. `Tile wheels I ure of s uoh u., size as'toenter the groove einthe face'of the 'wheel E, and the wheelsI and .blocks :1re et, tsuche. distance 'spartjthat when one wheel. reaches the. highest part ofthe wheel E, the next one will have entered the groove e :it the-centreof the wheelE." The -wheels I are kept away from the face of the wheeluntil they have reached the proper'point to-enter the groove el by ullunge, J, a.tta.ched -to thc guide-post G, und

having its'endsinclned, as shown in'g.. f1. 'As-thel slidejE movesupsvard, the ilenge or arm-ft formed upon or uttaehed vto the blocks H,strikes ugainst the flange J', which lifts the seid -hlock arid irheelssway from the wheel' and holds them away until they have re'ztcliedtheproper point for the said' wheel to enter the groove el.- IfA desired,the blocks H may be attachedto au 'endless chain or to a wheel, guidesbeing-used to lreep` the said blocks in proper position with referenceto the wheel E; t

What I'claim as new,and desir e to secure by Letters'Pateugisv 1. A nimproved machine formbd hy thecombination of the shaft B, the wheel Elxa" z'ii xgu spiral groove, e, formed in its face, the blocks. H havingfriction-Wheels, I, attached t'o them, and the slide 3i', or equivalent,.with 'euch other, and with the` guides G and frame A, substantially esherein shown, and described, end .for the pur., pose set forth. i

2'. The combinatioh ofthe flanges J- nd h with thc' guide G and blocksH, substantially zxsherein' shown unddescribed and for `the purpose setforth.V

S. E. `IU'T'JILE.

Witnesses Moses Temas, Hmm Dons.

